Understanding the Process of New Build Heating Installation

Planning the heating for your new build is a critical part of the construction process. It’s not just about choosing a boiler or a heat pump - it’s about designing a system that keeps your home comfortable and efficient all year round. At Wells Spa Plumbing & Heating, we specialise in providing comprehensive heating system installations that meet the needs of new builds and modern homes.

In this guide, we’ll walk you through the entire process of installing a heating system in a new home, from selecting the right heat source to handing over the controls once everything is up and running. Whether you’re planning a traditional radiator installation or exploring underfloor heating options, this guide will help you understand the process step by step.

1. Deciding on the Heat Source

The first and most important decision in your heating system installation is choosing the right heat source. This decision will affect how efficiently your home stays warm and how much you’ll spend on energy bills.

Gas Heating

Gas boilers remain a popular choice for new builds where there is access to the gas mains. They are typically more cost-effective and provide reliable heating for homes of all sizes.

Heat Pumps

For homeowners looking to reduce their environmental impact, heat pumps are an excellent alternative. These systems extract heat from the air or ground and are much more energy-efficient, though they often require a higher upfront investment. A qualified heating engineer can help you determine whether a heat pump is the right choice for your property.

Electric Heating

In areas without gas access, electric heating can be a practical solution. Options include electric radiators and underfloor heating, which can be less disruptive to install. However, be mindful that electric heating can be more expensive to run over time.

Oil Heating

Oil heating is a reliable option for homes that aren’t connected to the gas mains, especially in rural areas. Modern oil boilers are highly efficient and can provide consistent heating for your home. While oil prices can fluctuate, this system offers more control over fuel costs since you can bulk-buy oil when prices are lower. 

If you’re unsure which heat source is right for your new build, you can read our blog that weighs up the pros and cons of each. You can also consult with a professional heating engineer who can assess your home’s needs and offer expert advice.

2. Heating Design and Heat Loss Survey

Once the heat source has been selected, the next step is to design the heating system. This is where a heating engineer will perform a heat loss survey to determine the amount of heat required in each room.

Sizing Radiators or Underfloor Heating

Based on the results of the heat loss survey, the radiators or underfloor heating system will be sized appropriately to ensure maximum efficiency. If you opt for radiator installation, each unit must be the right size to heat the room effectively without wasting energy.

Planning Pipework Routes

The pipework routes are also mapped out at this stage to ensure hot water can flow efficiently from the heat source to the radiators or underfloor system. Careful planning ensures that all pipework remains concealed within the walls or floors, keeping your home looking neat and tidy.

3. Installing First Fix Pipework

With the planning complete, the first fix pipework is installed. This refers to the pipes that are hidden behind walls and under floors, delivering hot water to the heating system. A good heating engineer will ensure that the first fix pipework is installed with precision, as any mistakes at this stage can be costly and difficult to correct later on.

4. Testing After First Fix

Once the pipework is installed, it’s essential to test the system for leaks. This is an important safety measure to ensure the integrity of the entire heating system before the final stages of installation.

Pressure Testing

The pipework will be pressure tested to check for leaks or weak points. Testing ensures the system is safe and efficient before moving on to the next phase. A professional heating system maintenance plan will often include regular testing to ensure that everything continues to run smoothly after installation.

5. Second Fix: Installing Radiators and Heat Source

After the first fix is successfully tested, it’s time to move on to the second fix, where the radiators or underfloor heating are installed, and the heat source, whether a gas boiler or heat pump, is connected.

Radiator Installation

For traditional heating systems, radiators will be installed in each room based on the heating design and heat loss survey. Correct radiator installation is key to ensuring that each room is heated efficiently, keeping your home warm and energy-efficient.

Connecting the Heat Source

Once the radiators or underfloor system are in place, the heat source is connected. Whether it’s a boiler or a heat pump, this final connection brings the heating system together and ensures that heat can be distributed effectively throughout the home.

6. Filling and Commissioning

With everything installed, it’s time to fill and commission the heating system. This involves filling the system with water and adding an inhibitor, a chemical that prevents corrosion inside the pipework.

System Commissioning

The final commissioning stage includes a series of tests to ensure the system is running efficiently. A heating engineer will check the temperature, pressure, and overall performance of the system to confirm that everything is working correctly.

This is a critical part of the process, as it ensures that your heating system is optimised for long-term performance. Regular heating system maintenance is recommended to keep your system running at peak efficiency.

7. Handover to the Homeowner

The final step in the new build heating installation process is the handover. During this stage, the heating engineer will walk you through how to operate the system, explaining the controls and answering any questions you may have.

Warranties and Documentation

You’ll also receive the necessary documentation, including warranties for the heat source and any components. Understanding the details of your warranties and the maintenance schedule will help you keep your system running smoothly for years to come.

The process of installing a heating system in a new build requires careful planning, expert installation, and thorough testing. From selecting the heat source to commissioning the system, each step is essential to ensuring your home stays warm and energy-efficient.

At Wells Spa Plumbing & Heating, we provide expert advice and installation services for new builds across Kent and Sussex. Whether you need help with radiator installation or ongoing heating system maintenance, our team of experienced engineers is here to help. Contact us today to learn more about our services. You can also explore our full range of heating system installation services to see how we can tailor a solution to your home.